| Autor: |
Luebke NH; Wisconsin Dental Group, Milwaukee, USA., Brantley WA, Sabri ZI, Luebke FL, Lausten LL |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of endodontics [J Endod] 1995 May; Vol. 21 (5), pp. 259-63. |
| DOI: |
10.1016/s0099-2399(06)80993-3 |
| Abstrakt: |
A laboratory study was performed on machine-driven Canal Master drills to determine their physical dimensions, torsional performance, bending properties, and metallurgical characteristics in fracture. Physical dimensions were determined for each of the available sizes (#50 to #100) of Canal Master drills from the manufacturer that distributes these instruments in the United States. Samples were also tested in clockwise torsion using a Maillefer memocouple. Bending properties of cantilever specimens were measured with a Tinius Olsen stiffness tester. Bending fatigue testing was performed on a unique laboratory apparatus. Scanning electron microscope examination confirmed visual observations that the stainless steel Canal Master drills exhibited ductile torsional fracture. This study is part of a continuing investigation to establish standards for all machine-driven rotary endodontic instruments. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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